The invention relates to systems, apparatus and methods for the removal of cesium and other radionuclides from liquid waste contained in a high level waste tank. The invention includes transporting a stream of the liquid waste from the high level waste tank to one or more ion-exchange column assemblies to remove the cesium therefrom using a sorbent, such as, crystalline silico-titanate. The ion-exchange column assemblies include an ion-exchange column and an integrated shield. The column is concentrically positioned within the shield and an air gap is present between the column and the shield to provide passive cooling.

A cartridge for treating drinking water, the cartridge comprising a mixture of an ion-exchange material, one part of which is a highly acidic ion-exchange material and another part of which is a weakly acidic ion-exchange material, wherein one of the materials is loaded with alkali ions or alkaline earth ions.

A cartridge for treating drinking water, the cartridge comprising a mixture of an ion-exchange material, one part of which is a highly acidic ion-exchange material and another part of which is a weakly acidic ion-exchange material, wherein one of the materials is loaded with alkali ions or alkaline earth ions.

Provided is an underwater holding-type lithium recovering apparatus 1000 including: an underwater holder 100 installed on an offshore sea bed; a lithium adsorbent 200 held in the underwater holder 100 and adsorbing lithium ions contained in seawater; a moving ship 300 installed with a cleaning tank 320 cleaning the lithium adsorbent 200 transferred from the underwater holder 100 and a desorbing tank 330 desorbing lithium ions adsorbed in the lithium adsorbent 200 transferred from the cleaning tank 320, and moved to a coastline when lithium ions of a reference value or more are filled in the desorbing tank 330; and a transfer pump 400 transferring lithium ions filled in the desorbing tank 330 to a reservoir 500 installed at the coastline.

A water softening device for use for a pet is provided, comprising: a first chamber having a shape of a hollow container; a second chamber having a shape of a hollow container, the second chamber being detachably attached to an upper section inside the first chamber; and a filter cartridge having a plurality of openings and containing an ion exchange resin therein, the filter cartridge being detachably attached to a bottom section of the second chamber and positioned to protrude from the bottom section of the second chamber to a lower section inside the first chamber. The second chamber is configured to receive and contain first water including tap water, and the lower section inside the first chamber is configured to receive and contain second water that is the first water after passing through the filter cartridge based on gravity.

An ion exchanger includes a housing, a tube member, and an ion exchange resin. The housing includes an inlet port and an outlet port. The tube member is arranged inside the housing. The ion exchange resin is arranged between the tube member and the housing. A first flow passage and a second flow passage are formed in the housing. The first flow passage is configured to cause the coolant that has flowed in through the inlet port to flow directly to the outlet port. The second flow passage is configured to cause the coolant that has flowed in through the inlet port and passed through the ion exchange resin to flow to the outlet port. The first flow passage and the second flow passage are formed to join together in a state of being oriented in a same direction toward the outlet port.

An ion exchanger includes a housing, a tube member, and an ion exchange resin. The housing includes an inlet port and an outlet port. The tube member is arranged inside the housing. The ion exchange resin is arranged between the tube member and the housing. A first flow passage and a second flow passage are formed in the housing. The first flow passage is configured to cause the coolant that has flowed in through the inlet port to flow directly to the outlet port. The second flow passage is configured to cause the coolant that has flowed in through the inlet port and passed through the ion exchange resin to flow to the outlet port. The first flow passage and the second flow passage are formed to join together in a state of being oriented in a same direction toward the outlet port.

A purification device is provided that includes a porous container, purification media retained in the porous container, and a flow controller integral to the porous container. A purification device is also provided that includes a porous elastic container, purification media, and a flow controller. The porous elastic container has a pocket formed therein. The purification media is compressibly retained in the porous elastic container. The flow controller is elastically retained in the pocket of the porous elastic container.

Cartridges useful in regenerating or purifying dialysis solutions are described as well as methods to regenerate or purify spent dialysis solutions. Dialysis methods using the sorbent cartridges of the present invention are further described.

Sorbent cartridge systems useful in regenerating or purifying dialysis solutions are described as well as methods to regenerate or purify spent dialysis solutions. Dialysis systems using the sorbent cartridge system of the present invention are further described.